Which method is acceptable to prevent entrance of contaminants into discharge piping?

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Study for the NFPA 96/17A Class K Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which method is acceptable to prevent entrance of contaminants into discharge piping?

Explanation:
Sealing the end of discharge piping with caps prevents dirt, dust, moisture, and other debris from entering the line when it’s not in use or during maintenance. A cap provides a tight seal that blocks contaminants and helps keep the system clean and ready for operation. The other hardware—screws, bolts, or washers—does not seal the end and would leave openings or risk introducing debris, so they aren’t suitable for preventing contamination.

Sealing the end of discharge piping with caps prevents dirt, dust, moisture, and other debris from entering the line when it’s not in use or during maintenance. A cap provides a tight seal that blocks contaminants and helps keep the system clean and ready for operation. The other hardware—screws, bolts, or washers—does not seal the end and would leave openings or risk introducing debris, so they aren’t suitable for preventing contamination.

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